lestes: lestes::lang::cplus::lex::line

typedef ulint lestes::lang::cplus::lex::line_numbers::count_type

Common type for counting tokens.

Definition at line 52 of file line_numbers.hh.

lestes::lang::cplus::lex::line_numbers::line_numbers ( void ) [protected]

Creates the object, initializes with first row and column.

Creates the object, initializes with first line and column.

Postcondition:: line == 1
column == 1

Definition at line 49 of file line_numbers.cc.

Referenced by create().

00049                               :
00050         line(1),
00051         column(1)
00052 {
00053 }

lestes::lang::cplus::lex::line_numbers::line_numbers ( const line_numbers & ) [private]

Hides copy constructor.

ptr< ucn_token > lestes::lang::cplus::lex::line_numbers::read ( void ) [virtual]

Reads next token from input.

Reads next token, assigns line and column numbers. The line number is relative to the physical start of the file. It does not reflect the line directives yet.

Implements lestes::lang::cplus::lex::ucn_filter.

Definition at line 60 of file line_numbers.cc.

References column, lestes::lang::cplus::lex::simple_location::create(), lestes::lang::cplus::lex::ucn_filter::input_read(), lassert, line, lestes::lang::cplus::lex::ucn_token::TOK_BASIC, lestes::lang::cplus::lex::ucn_token::TOK_EOF, lestes::lang::cplus::lex::ucn_token::TOK_ERROR, and lestes::lang::cplus::lex::ucn_token::TOK_TRANSLATED.

00061 {
00062         ptr<simple_location> loc = simple_location::create(line,column);
00063         ptr<ucn_token> t = input_read();
00064         ucn_token_type utt = t->type_get();
00065         t = t->clone_location(loc);
00066 
00067         switch (utt) {
00068                 case ucn_token::TOK_BASIC:
00069                         // line end
00070                         if (t->value_get() == character::ascii_new_line) {
00071                                 // reset column
00072                                 column = 1;
00073                                 // update line
00074                                 line++;
00075                                 break;
00076                         }
00077                         // fall through
00078                 case ucn_token::TOK_TRANSLATED:
00079                         // update column
00080                         column++;
00081                         break;
00082                 case ucn_token::TOK_ERROR:
00083                 case ucn_token::TOK_EOF:
00084                         // no need to update line or column
00085                         break;
00086                 default:
00087                         // TODO pt ICE
00088                         lassert(false);
00089                         break;
00090         }
00091         return t;
00092 }

ptr< line_numbers > lestes::lang::cplus::lex::line_numbers::create ( void ) [static]

Returns new instance, initialize with first row and column.

Returns new instance.

Returns:: New instance of this class.

Definition at line 98 of file line_numbers.cc.

References line_numbers().

00099 {
00100         return new line_numbers();
00101 }

line_numbers& lestes::lang::cplus::lex::line_numbers::operator= ( const line_numbers & ) [private]

Hides assignment operator.

count_type lestes::lang::cplus::lex::line_numbers::line [private]

Line of the coming token.

Definition at line 62 of file line_numbers.hh.

Referenced by read().

count_type lestes::lang::cplus::lex::line_numbers::column [private]

Column of the coming token.

Definition at line 64 of file line_numbers.hh.

Referenced by read().

lestes::lang::cplus::lex::line_numbers Class Reference

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation


Public Types
typedef ulint	count_type
	Common type for counting tokens.
Public Member Functions
ptr< ucn_token >	read (void)
	Reads next token from input.
Static Public Member Functions
static ptr< line_numbers >	create (void)
	Returns new instance, initialize with first row and column.
Protected Member Functions
	line_numbers (void)
	Creates the object, initializes with first row and column.
Private Member Functions
	line_numbers (const line_numbers &)
	Hides copy constructor.
line_numbers &	operator= (const line_numbers &)
	Hides assignment operator.
Private Attributes
count_type	line
	Line of the coming token.
count_type	column
	Column of the coming token.